CVE-2019-1607 : Vulnerability Insights and Analysis

Cisco NX-OS Software CLI Command Injection Vulnerability

Understanding CVE-2019-1607

This CVE involves a vulnerability in Cisco NX-OS Software that could allow an authenticated, local attacker to execute arbitrary commands on affected devices.

What is CVE-2019-1607?

An authenticated, local attacker could exploit a vulnerability in the CLI of Cisco NX-OS Software due to inadequate validation of arguments in specific CLI commands.
The attacker needs valid administrator credentials to inject malicious input into the command argument and execute arbitrary commands with elevated privileges.

The Impact of CVE-2019-1607

CVSS Score: 4.2 (Medium Severity)
Attack Vector: Local
Privileges Required: High
Confidentiality Impact: Low
Integrity Impact: Low
Availability Impact: Low

Technical Details of CVE-2019-1607

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Lack of proper validation of arguments in specific CLI commands in Cisco NX-OS Software.

Affected Systems and Versions

Products: Nexus 7000 and 7700 Series Switches
Vulnerable Versions: < 6.2(22), < 7.3(3)D1(1), < 8.2(3)

Exploitation Mechanism

Attacker injects malicious input into the argument of an affected command to execute arbitrary commands on the underlying OS.

Mitigation and Prevention

Protect your systems from CVE-2019-1607 with the following steps:

Immediate Steps to Take

Ensure all users have appropriate access levels and credentials.
Monitor and restrict CLI command usage.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch Cisco NX-OS Software.
Conduct security training for administrators on best practices.

Patching and Updates

Apply the latest security patches and updates from Cisco to address this vulnerability.